I had this Hammered Dulcimer built using springs instead of wire strings. I like the industrial sound. I had to experiment for a while to find the right kind of springs to use. I settled for three types of springs, which I thought worked reasonably well together. The sound is slightly atonal but that was the point. I wanted the melodies played on it to sound slightly vague. This Dulcimer has two octaves. The clips below are just demos so pardon the slight dullness in sound.